Office desk



F. BIANCHI Y RECHE. OFFICE DESK. APPLICATION FILED FEB. 26, 1920.

- Patented July 4,1922.

Fig.1

FERNANDO BIANCHI Y RECHE, OF MADRID, SPAIN.

OFFICE DESK.

Specification of Letters Patent.

Patented July ii, 1922.

Application filed February 26, 1920. Serial No. 361,593.

To all "whom it may concern 1 Be it known that I, Fnuxrnoo BLANCH! YBrena, a subject of the King of Spain, residing at No. 7 Calle delMarques de Cuhas, lriadrid, Province of Madrid. Spain. have invented anew and useful Office Desk (for which l have filed application forpatent in Spain. No. 69905 dated February 8, 1919). of which thefollowing is a specification.

This invention relates to improvements in articles of furniture such asdesks or'writing cabinets. the object of the invention being to providean improved article of this kind embodying a top, a lower work board.and means to enable said work board and topto be simultaneously operatedso that when the top is raised and moved rearwardly out of the way thelower board is also raised and moved forwardly in convenient positionfor using a typewriting machine or doing other work thereon.

Another object of the invention is to provide a shutter for the desk orcabinet and to also provide a locking device for the top and which isautomatically operated by the curtain so that when the top is loweredand closed upon the upper side of the desk and the shutter raised to therequired position to close the front of the desk, he head of the shutterwill cause said locking device to automatically engage and lock saidtop.

Another object of the invention is to provide operating means for thetop and lower board embodying a yielding spring which prevents the topand lower board from moving with jolts or jars and causing them to moveeasily and smoothly under all conditions. V

' lVith the above and other objects in view the invention consists ofthe construction, arrangement and combination of devices hereinafterdescribed and claimed.

In. the accompanying drawings:

Figure l is a vertical sectional view of the desk constructed andarranged in accordance with my invention, and showing the boards in fulllines in position for use and in dotted lines in closed position.

Figure 1%; is a detail perspective view of the operating shaft and itsconnections.

The article of furniture embodying my invention, is here shown as adesk, having a frame or body 1 and supporting legs 2. Said body is openat the top and also at the sides and front. The top is indicated at Aand the lower board at B. Said lower board is pivotally connected to theupper end of levers C. D, the lower ends of which are pivotally mountedvin the frame or body of the desk as shown.

The lever D up to about a third of its length is placed inaction toanother lever E which is in its turn placed in action to an arm of theconnecting rod F in connection with a spring T. the tension of which canhe graduated by means of the handle G.

The top A is in its turn joined to a bent lever H moved with another oneI, the end of which is joined in a revolving way to the lever D.

The bent lever H is joined revolving-1y to the top in the point J.

This top A has in its inside part a projection K moved by means ofhinges or other similar means with the board L which is revolving in.respect to the vertical board M by means of the piece Nor otherappropriate means.

Considering this improvement or aspect of the invention applied to atypewriting table such as is shown in the drawing, we see that in areposing situation the lower board B remains inside the table while theupper one serves as a board of the same, the leaf or board L remaininghorizontal and adjusted to the space 0.

In this position the top A rests upon the sides of the table and isimmovable by the action of the hook or the little safety lever P whichowing to its special form, and as will be described later on is obligedto insert itself in the projecting screw Q when the shutter R is raised.

When the board B (which is destined to support the typewriter) has to beused the shutter R will be first pulled down and the board A will beslightly pushed backwards. Owing to the bent lever H and to the hingedconnection between the projection K of the top A and the leaf L saidleaf will turn upwardly and said top A while always preserving ahorizontal position will also be elevated and said movement will becontinuous until the levers G, D are in vertical position. This advancemovement will take place without roughness or force as the tension ofthe spring T transmitted to the arm of the connecting rod F in action tothe lever E serves as a brake to any too violent displacement.

tension of this spring can be graduated by 7 means of the handle.

To return the table ."to its normal "state it is only necessary toslightly pull the top A forwardly whereupon all the levers of themechanism turning'on their axles will effect the precise movements tomake the top advance, the lower board receding and both descend tillplacedin the required position.

All the aforementioned levels are disposed in duplicate transmittingtheir action to both sides of the board towhich they are connected.

As can be seen in the drawings, Figure 1,

there are disposed in the two lateral boards of the table and forpivotal movement, two securing levers P, one on each side which have 'aform of an obtuse angle wide. apart, the inclination of whichcorresponds to the one that enters in the form of a talus or slope whichthe upper 'bar of the shutter R has in'its inside part; i The upper endof these small safety levers has a head tree made to be hooked on to thescrew or similar disposition Q placed on the top;

When the table "s to be closed, and the shutter raised the bar willengage the small safety lever P and turn the same on its pivot in therequired direction to cause the forked upper portion of said levertoengage the hook on the screw Q, and thereby lock the top A in place.

On lowering the shutter to open the table, said bar engages the lowerarm of said'lever and turns the said lever in therequired direction todisengage the screw Q.

As can be quite appreciated no manual movement is needed for the workingof the small safety levers P as the same are operated automatically bythe bar.

Having sufliciently described the present invention the following isdeclared to be new and novel.

Claims V 1. In an article of furniture, a frame, a leaf looselypivotally connected to the rear upper side of the frame, a toppivotallyconnected to said leaf, a bell-crank leverpivotally mounted in the frameand having one of its arms pivotally connected to the upper board, alower board, levers having their lower ends pivotally mounted in theframe and their upper ends p'ivotally connected to the lower board, anda link connecting the other arm of said bell-crank lever to one of thelast named levers.

' 2. In an article of fin'niture,- a frame, a board pivotally mounted onthe same for longitudinal and vertical'swinging movement, a lockingelement for said board, pivotally mounted in the frame, and comprising apair of angularly related arms, and a shutter mounted in grooves in saidframe and having a head and arranged for movement in a path which :isintersected by the upper arm of said locking element, when said board israised and moved rearwardly.

In testimony whereof I affix my signature in presenceof two witnesses.

V FERNANDO BlANCHl'y RECHE.

WVitnesses 7 ALroNso Lornz, 7 MANUEL MARFIJ.'

